Japan Population Decline Simulator

Kagawa香川県

Utazu 宇多津町

Data last updated:

Utazu, Kagawa, Japan has a population of 18,572 (2025 national census). IPSS projections estimate 18,429 by 2030 and 16,569 by 2050 (a decrease of about 11.4% from 2020), with the share of residents aged 65+ rising from 21.6% in 2020 to 33.5%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025Census

18,572

2030Projection

18,429

▼ -1.4%

2040Projection

17,663

▼ -5.5%

2050Projection

16,569

▼ -11.4%

Change vs. 2020 census

Elderly Rate (65+): 2020 21.6%→2050 33.5%

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Other municipalities in Kagawa (香川県)

Data Sources

  • Portal Site of Official Statistics of Japan (e-Stat)(https://www.e-stat.go.jp/)
  • National Institute of Population and Social Security Research (IPSS), Regional Population Projections (2023 ed.)

* This service uses the e-Stat API but its content is not guaranteed by the Japanese government.

Utazu Population Table (1980–2050)

Population by year: national census results (restated to current municipal boundaries) and IPSS (2023) projections based on the 2020 census.

YearPopulationvs 2020Type
198011,341▼ -39.3%Census
198511,864▼ -36.6%Census
199012,807▼ -31.5%Census
199514,928▼ -20.2%Census
200015,978▼ -14.6%Census
200517,460▼ -6.6%Census
201018,434▼ -1.4%Census
201518,952▲ +1.4%Census
202018,699—Census
202518,572▼ -0.7%Census
203018,429▼ -1.4%Projection
203518,091▼ -3.3%Projection
204017,663▼ -5.5%Projection
204517,145▼ -8.3%Projection
205016,569▼ -11.4%Projection

About Utazu

Overview

Utazu (宇多津町) is a municipality in Kagawa, Japan, with a population of 18,572 as of 2025.

Population Projection of Utazu

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Utazu's population is expected to reach 18,429 by 2030 (-1.4%), 17,663 by 2040 (-5.5%), and 16,569 by 2050 (-11.4%). A modest population change is expected.

Aging Rate of Utazu

The aging rate (percentage of residents aged 65 and over) is 21.6% as of 2020 and is projected to rise to 33.5% by 2050. The aging rate will remain below the most severe Japanese averages.

National Comparison

Utazu's demographic trajectory is similar to the national average.

National and Prefectural Rank

  • Population decline rate: Ranked #1580 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #1706 out of 1903 nationwide.
  • Population size: Ranked #1096 out of 1917 nationwide.
  • Related: National rankings / All municipalities in Kagawa

Earnings in Kagawa (香川県): Average salary in Kagawa (香川県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure

Frequently Asked Questions

Q.What is the current population of Utazu, Kagawa?
A.According to the 2025 national census, Utazu has a population of 18,572.
Q.What is the population of Utazu in 2026?
A.Utazu's population in 2026 is estimated at approximately 18,543. This is an interpolated reference value between the 2025 census (18,572) and the IPSS projection for 2030 (18,429).
Q.What is the projected population of Utazu in the future?
A.According to IPSS projections, Utazu's population is expected to be 18,429 in 2030, 17,663 in 2040, and 16,569 in 2050.
Q.What is the population decline rate of Utazu?
A.Over the 30 years from 2020 to 2050, Utazu's population is projected to change by -11.4%. The 10-year change is -1.4% and the 20-year change is -5.5%.
Q.Why is the population of Utazu declining?
A.Nationwide, Japan's population decline is driven by natural decrease (deaths exceeding births) and, in regional municipalities, by net out-migration of young people to major metropolitan areas. In Utazu, the share of residents aged 65+ is projected to rise from 21.6% to 33.5% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Utazu?
A.Utazu's aging rate (percentage aged 65 and over) is 21.6% as of 2020, projected to rise to 33.5% by 2050.
Q.Where does this population data come from?
A.Historical data is sourced from Japan's national census via the e-Stat API (Statistics Bureau of Japan). Future projections are from the National Institute of Population and Social Security Research (IPSS) "Regional Population Projections 2023".
Q.Is the data up to date?
A.Historical data uses national census results through 2025. Future projections use the IPSS 2023 edition, which is based on the 2020 census.

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